﻿/*
Copyright 2009 Matías Fidemraizer (www.matiasfidemraizer.com).

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/

using System;

#region "Custom namespace declaratons"
using Comkarl.Architecture.Patterns.MVC.Entities;
#endregion

namespace Comkarl.Architecture.Patterns.MVC.Entities
{
    /// <summary>
    /// Represents a view identifier.
    /// </summary>
    /// <typeparam name="TIdentifierName">
    /// The type for the view identifier's name.
    /// </typeparam>
    public class ViewIdentifier<TIdentifierName> : EntityIdentifier<TIdentifierName>, IEquatable<ViewIdentifier<TIdentifierName>>
        where TIdentifierName : IEquatable<TIdentifierName>
    {
        /// <summary>
        /// Default constructor.
        /// </summary>
        /// <param name="name">
        /// The unique value for the view identifier's name.
        /// </param>
        public ViewIdentifier(TIdentifierName name)
            : base(name)
        {
            // Time-stamps the current view identifier.
            timeStamp = DateTime.Now;
        }

        /// <summary>
        /// Retrieves the view identifier's time stamp.
        /// </summary>
        private readonly DateTime timeStamp;

        /// <summary>
        /// Gets the view identifier's time stamp.
        /// </summary>
        public DateTime TimeStamp
        {
            get { return timeStamp; }
        }

        #region IEquatable<ViewIdentifier<TIdentifierName>> Members

        public bool Equals(ViewIdentifier<TIdentifierName> other)
        {
            return other != null && base.Equals(other) && TimeStamp == other.TimeStamp;
        }

        #endregion
    }
}
